ABSTRACT
Asphalt concrete facing slabs have been widely used as anti-seepage structures worldwide in Pumped-Storage Plants (PSP). In China a great many PSPs are going to be built in the next 5–10 years according to the national PSP developing plan to meet the increasing need for power and energy. Huhhot PSP which was built in 2013 in Inner Mongolia in North China where the weather is very cold, the anti-fracture property of the asphalt concrete in low-temperature is the critical issue to be solved to use asphalt concrete as seepage-proof facing slabs. In this paper, firstly the developing process of construction technology of asphalt concrete facing slab in China as well as its application in home and abroad are briefly introduced. Then three main issues in paving asphalt concrete facing slabs in Huhhot PSP, namely, the anti-fracture design for asphalt concrete slab in low temperature, the compaction technology of impermeable layer with modified bitumen and the construction technology in low temperature are addressed.
